Android-更改Tab onClicked的背景颜色

Question

I have designed an app in that I am using TabBar and I want to change the BackgroundColor of TabBar when selected or pressed.. In the class where I am implementing TabBar is extending Fragment not TabActivity . I have implemented following

tabHost = (TabHost) v.findViewById(R.id.tabhost); 



    mLocalActivityManager = new LocalActivityManager(getActivity(), false);

    Intent intentongoing = new Intent().setClass(getActivity(), Properties_org_screen.class);
    TabSpec tabSpecOngoing = tabHost.newTabSpec("On Going").setIndicator("On Going").setContent(intentongoing);


    Intent intentcomplete = new Intent().setClass(getActivity(), Properties_org_screen.class);
    TabSpec tabSpecComplete = tabHost.newTabSpec("Completed").setIndicator("Completed").setContent(intentcomplete);


    Intent intentproposed = new Intent().setClass(getActivity(), Properties_org_screen.class);
    TabSpec tabSpecProposed = tabHost.newTabSpec("Proposed").setIndicator("Proposed").setContent(intentproposed);

    mLocalActivityManager.dispatchCreate(savedInstanceState);

    tabHost.setup(mLocalActivityManager);


    tabHost.addTab(tabSpecOngoing);
    tabHost.addTab(tabSpecComplete);
    tabHost.addTab(tabSpecProposed);



    tabHost.setCurrentTab(0);

    for (int i = 0; i < tabHost.getTabWidget().getChildCount(); i++)
    {
         tabHost.getTabWidget().getChildAt(i).setPadding(2,5,0,10); 
         Log.v("","In for loop");

         TextView tv = (TextView) tabHost.getTabWidget().getChildAt(i).findViewById(android.R.id.title); //Unselected Tabs
         tv.setTextColor(Color.WHITE);       

    }   
**OnCreate Ends**
@Override
public void onTabChanged(String arg0)
 {
    // TODO Auto-generated method stub

  for(int i=0;i<tabHost.getTabWidget().getChildCount();i++)
  {
    tabHost.getTabWidget().getChildAt(tabHost.getCurrentTab()).setBackgroundColor(getResources().getColor(R.color.blue_title));     
  }

}

I also tried to implement Custom_tab.xml as,

<?xml version="1.0" encoding="utf-8"?> 
<selector xmlns:android="http://schemas.android.com/apk/res/android">

<item android:state_selected="true" android:drawable="@drawable/blue"/>
<item android:state_focused="true" android:drawable="@drawable/new_background"/>
<item android:state_pressed="true" android:drawable="@drawable/blue"/>


</selector>

and calling this file in

<TabWidget android:id="@android:id/tabs"
            android:layout_width="fill_parent" android:layout_height="40dp"
            android:layout_gravity="center" android:gravity="center" android:background="@drawable/custom_tab"/>

Still not working.. What I am missing??

Answer 1

Use this in OnCreate

for (int i = 0; i < tabHost.getTabWidget().getChildCount(); i++)
    {
         tabHost.getTabWidget().getChildAt(i).setPadding(2,5,0,10); 
         Log.v("","In for loop");
         TextView tv = (TextView) tabHost.getTabWidget().getChildAt(i).findViewById(android.R.id.title); //Unselected Tabs
         tv.setTextColor(Color.WHITE);

         tabHost.getTabWidget().getChildAt(i).setBackgroundResource(R.drawable.new_background);
    }

    tabHost.getTabWidget().getChildAt(tabHost.getCurrentTab()).setBackgroundColor(getResources().getColor(R.color.blue_title));

and TabChanged method

@Override
public void onTabChanged(String arg0) {
    // TODO Auto-generated method stub  

    for (int i = 0; i < tabHost.getTabWidget().getChildCount(); i++)
    {           
        tabHost.getTabWidget().getChildAt(i).setBackgroundResource(R.drawable.new_background);
    }

    tabHost.getTabWidget().getChildAt(tabHost.getCurrentTab()).setBackgroundColor(getResources().getColor(R.color.blue_title)); 

}

It will display the blue color to tab which is selected and a white image named new_background to the tab which is not selected..

and don't forget to write

implements OnTabChangeListener 

after your class name

and

tabHost.setOnTabChangedListener(this);

after

tabHost = (TabHost) v.findViewById(R.id.tabhost);

This one is the Perfect Solution I guess.